Paper pail



UNITED STATES PATENT OFFICE.

FRANCIS N. DAVIS, OF BELOIT, WISOONSIN.

PAPER PAIL.

SPECIFICATION formingpart of Letters Patent No. 229,678, dated July 6, 1880.

Application filed March 4, 1880. (Model) To all whom it may concern:

Be it known that I, FRANCIS N. DAVIS, of Beloit, in the county of Rock and State of Wisconsin, have invented certain new and useful Improvements in Paper Pails; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and useit, reference being had to the accompanying drawings, which form part of this specification.

My invention relates to an improvement in paper pails. Heretofore paper pails have been impregnated with various kinds of waterproofin g compositions; but all such pails were found defective in use by reason of the fact that when filled with "hot water the heat operated to liquefy or soften the waterproofing composition, thereby causing the pail to lose its original stiffness and rigidity, sothat its sides or body would be easily crushed when subjected to but comparatively little strain or pressure. Another defect in paper pails as ordinarily constructed consists in the non-rigid character of the material employed. In order to make a pail simply of paper it requires a number of layers of compressed paper firmly secured together, that the pail may have the required rigidity to withstand the crushing or lateral strains exerted thereon. This necessitates the employment of an undue amount of paper in each pail, and thereby materially enhances the first cost of manufacture.

The object of my'invention is to provide paper pails having the pores of the material of which the pails are constructed filled with vulcanized water-proof material, to enable the pail to withstand the action of hot or'cold water, and to impart the desired stiffness and rigidity thereto.

With these ends in view my invention consists, first, in a paper pail the pores of which are filled with vulcanized water-proof material composed of oil and sulphur.

My invention further consists in a paper pail the body of which'is composed of layers of paper and wood veneering, and is impregnated with vulcanized waterproofing composition consisting of oil and sulphur.

My invention further consists in the process of waterproofing paper pails, consisting in impregnating the pores of the material of which the pail is made with a liquid mixture of oil and sulphur, and afterward vulcanizing the gums of the oil within the pores of the mate rial by subjecting the saturated pail to a high degree of heat.

The accompanying drawing represents a vertical section of apaper pail embodying my invention.

A represents the body'of the pail, it being formed of the central layer of wood veneer, B, and outer and inner layers, 0 D, of compressed paper, which latter are firmly attached to the opposite surfaces of the wooden veneer by some suitable cement, which will not be alfected by heat. Veneer-B may be made of different kinds of wood; but elm wood is preferably used, as it is cheap, tough, and well suited for such use. After the layers of compressed paper have been applied and secured to the wood veneer, which is effected by subjecting the composite sheet of paper and veneer to pressure between suitable rollers or in apress, thereby intimately uniting and firmly securing the several sheets, the ends of the strip of which the body is to be made are beveled and secured together by cement. The body of the pail is then dried and then immersed in a waterproofing composition composed of oil and sulphur, the proportions of which parts may be varied; but two pounds of sulphur to one gallon of dryingoil-such, for instance, as linseed-oilis found to answer the purpose. The body of the pail is allowed to remain in the waterproofing bath or composition (the latter being heated to from 250 to 400 Fahrenheit) until it has become thoroughly impregnated with the waterproof composition, when it is removed and placed in a drying-oven and subjected to heat from 250 to 400 Fahrenheit, and then removed. The bottom of the pail is subjected to the same waterproofing treatment. The oil serves as a water-repellent, while the sulphur fills and closes the pores of the wood and paper, and when applied with oil in a heated state and afterward baked it is virtually vulcanized with the gums in the oil, thereby imparting the desired stiffness and rigidity to the body of the pail. As sulphur is not softened or affected by a degree of heat less than 212 Fahrenheit, the combined sulphur and gums of the oil embedded and hardened in the pores of the paper and wood of the pail constitute a firm, rigid filling, which serves to protect the oil, to impart the desired rigidity and solidity to the pail, and also to withstand any ordinary degree of heat to which the pails are subjected.

The pail -bottom is formed with a downwardly projecting flange, a, which, together with the lower edge of the pail-body, is protected by a sheet-metal binding, 0, the latter being spun or pressed into the desired shape and secured to the lower edge of the pail. The metal binding may be secured by tacks or rivets, c. The upper edge of the pail is also provided with a metal binding, 0. The bail d is secured at its ends within the bail-ears e, fastened to the sides of the body A by means of rivets.

The pails are painted and varnished, and, While presenting a finished and artistic appearance, are very much lighter than wooden pails, and are by far more durable than wooden or sheet-metal pails, as they are not afl'ected by heat and cold or by shrinkage, and are not liable to become impaired by being pressed out of shape, as is the ease with sheet-metal pails.

The waterproofing composition is rendered odorless by subjecting the pails to the baking process after they have been impregnated with the oil and sulphur.

While the composition herein specified is not aflected by either hot or cold water, it also imparts an elastic body to the pail which materially enhances its durability and worth.

I make no broad claim in this patent to a pail composed of sheets of paper stifl'ened and strengthened by a layer or layers of veneer or equivalent material.

Further, I make no broad claim in this patent to a pail the body of which is composed of paper and a layer or layers of stiffening material, the pores being closed by any waterproofing material vulcanized therein, as such subjects-matter are reserved for a separate patent, the application for which is pending herewith.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-- 1. A paper pail the pores of which are filled with vulcanized water-proof material composed of a water-repellent and sulphur, substantially as described.

2. A paper pail the body of which is composed of layers of paper and wood veueering, and is impregnated with vulcanized waterproofing composition consisting of a water-repellent and sulphur, substantially as set forth.

3. The process of waterproofing paper pails, consisting in impregnating the pores of the material with a liquid mixture of oil and sulphur, and afterward vulcanizing the gums of the oil within the pores by subjecting the saturated pail to a high degree of heat, substantially as set forth.

In testimony that I claim the foregoing l have hereunto set my hand this 1st day of March, 1880.

FRANCIS N. DAVIS.

\Vitnesses F. 0. MCCLEARY, H. A. SEYMOUR. 

